import { AngularDataContext } from '@themost/angular';
/**
 *
 * This Service is used to get or set user storage items
 * @export
 * @class ConfigurationService
 */
export declare class UserStorageService {
    private context;
    private _hasUserStorage;
    constructor(context: AngularDataContext);
    /**
     * Validates if server supports user storage
     */
    hasUserStorage(): Promise<any>;
    /**
     * Gets a user storage item based on the given key
     * @param key
     */
    getItem(key: string): Promise<any>;
    /**
     * Sets a user storage item
     * @param key
     * @param value
     */
    setItem(key: string, value: any): Promise<any>;
    /**
     * Removes a user storage item
     * @param key
     */
    removeItem(key: string): Promise<any>;
}